Answer: Leyland Cypress can grow to 100' but usually doesn't in landscape situations. The normal spacing is from 2-5'. If they are only 2' apart, they will developing into a thick privacy screen. Spaced 5' apart, there will be more room for good air circulation (which promotes good health). Leyland Cypress are fast growing trees, so expect 8-12 inch of new growth each year.
Q&A Library Searching Tips